Fish does the twist to get airborne

Like true “flying fish,” the ribbon halfbeak has large pectoral fins that it uses like wings to escape aquatic predators by flying through the air. Unlike them, however, it lacks a set of winglike pelvic fins, which add much-needed rear stability while in flight. So, how does it manage? According to Dr. Yoshinobu Inada from Japan’s Tokai University, it all comes down to a twist.